Universal gateway- combining Wi-Fi/Ethernet & GSM/GPRS options


Input Power

7VDC/850mA power adapter

Standby Current: depending on modelRF

433MHz, 868MHz or 915MHz, compliant with local regulations                                                       

RF Power

less than 10mW.


about 100m to 300m or more @open field, 25℃ (Depends on sensors and Hardware version).

Receiver Type

super heterodyne.

RF Security Code

16,777,216 combinations with check sum for each type of sensors.

More than 4 billion combinations in total.

Communication Link

 Ethernet interface or optional wifi/ GSM/GPRS

Event Log

max. 512 records.


 4 LEDs (Away/Home/Disarm/Data).

Sensor Zones

 total 288 zones. (Burglar zones x 128, Fire zones x 64, Controller zones x 32,  Medical zones x 32, Special sensor zones x 32)

Memory Back-up Time

 Min. 3 months after power break.

Battery Back Up Operation Time

from 4 hours to 12Hours standby. (Depends on back up battery type, only for the operation of the Base Unit with Ethernet Adaptor)

3 Wire Sensor Inputs

 Each can be assigned as Panic, Burglar, Fire, Medical, Tamper or Controller.

Alarm Out

Open collector transistor output with 10 Ohm protection resistor, for 5V external siren or other alarm device, 300mA max.

Delay Activation Time

 0- 255 seconds programmable.

Digital Interfaces 


Automation Switch control

RJ11 6-pin for control of 16 units X-10 switches or (XRM-01) Relay Modules.

Wireless Socket: SW#1~SW#8.

Preset Telephone Number

5 GSM/SMS numbers, 2 CMS data links (With GSM option).

Voice Recording120 seconds in total (With Voice Module).

Emergency announcement in 6 segments, 13 seconds for common segment, 4 seconds each for Panic, Burglar, Fire, Medical, Special and Latchkey/ Power segments.

GSMContact ID with 2-way voice (With GSM Adaptor and Voice Module).
Internet CMS protocolProprietary Scientech Protocol (ST-I, ST-II), CSV and SIA ADM-CID IP Alarm protocol
Clock Accuracy

within 5 seconds daily.

Operation Temp.


Storage Temp.


Size190x120x40 mm.

LS-20E (Ethernet Adaptor),

LS-20GV (GSM/GPRS with Voice Module),

LS-20EV (Ethernet Adaptor with Voice Module),

LS-20EG (Ethernet Adaptor, GSM/GPRS & Voice Module),

LS-20W (wifi),

LS-20WV (wifi with Voice Module),

LS-20WG (wifi, GSM/GPRS & Voice Module).